Type1:
	mov		ax, [y1] ; if dx and dy are both same exit
	cmp		ax, [y0]
	je		done
	mov		cx, [err]
	add		cx, [err]
	mov		[e2], cx

    neg     word[difY]
    cmp     [difY],cx ; compare e2 with negative difference of Y
    jg      ErrMinusDY  ; if e2 greater than -dy, err now equals dx - 2dy
    return1:
    mov     dx, [x0]
    add     dx, [sx]    ; add 1 to x0
    mov     [x0], dx
    cmp     [difX], cx
    jl      ErrPlusDX
    return2:
    mov     dx, [y0]
    add     dx, [sy] ;
    mov     [y0], dx
	jmp goloop

ErrMinusDY:
    mov     dx,[difY]
    sub     [err],dx
    jmp     return1


ErrPlusDX:
    mov     dx,[difX]
    add     [err],dx
    jmp     return2